How to create a new standard user account on Mac
Step 1. Click on the Apple icon in the upper left corner of your Mac's screen.
Step 2. Select System Preferences from the drop-down menu.
Step 3. Click on Users & Groups.
Step 4. Click the lock in the lower left corner to make changes.
Step 5. Type your administrator password.
Step 6. Click Unlock.
Step 7. Click the Add user account button (it looks like a plus, underneath the list of user accounts).
Step 8. Set the new user's account type as Standard.
Step 9. Enter a full name for the user, an account name, and password.
Step 10. When you're finished, click Create User.